early



(No Model.) 2 Sheet-s--Shet 1.

W. J. EARLY.

APPARATUS FOR MOLDING PULLEYS. No. 323,302. Patented July 23, 1335.

N. PETERS. muwmm mm, waking-1n, n.c.

2 Sheets-Sheet 2.

(No Model.)

W. J. EARLY.

APPARATUS FOR MOLDING PULLEYS.

jatented July 28, 1885.

4/ i/$021k 1537 M 7 A nventor.

N. PETERS. FhumLimcn her. Wuhingiun. (1c.

UNITED STATES PATENT rEicE,

\VlLLiAM: J. EARLY, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO JONES 85 LAUGHLINS, (LTMITED,) OF SAME PLACE.

APPARATUS FOR MOLDING PULLEYS.

SPECIFICATION forming part of Letters Patent No. 323,302, dated July 28, 1885.

Application filed June 5, 1585. (No model.)

To all whom it may concern:

Be it known that 1, XVILLIAM J. EARLY, residing at Pittsbnrg, in the county of Allegheny and State of Pennsylvania, aeitizen of the United States, have invented or discovered certain new and useful Improvements in Apparatus for Molding Pulleys, of which improvements the following is a specification.

In the accompanying drawings, which make part of this specification, Figure 1 is an angular sectional elevation of a completed mold on the lines a: a: of Fig. 3. Fig. 2 is a diametrical sectional elevation of the moldingtable. Fig. 8 is a top plan view of the middle portion of the flask, showing the pattern plate or spider in position. Fig. 4 is a sectional diametrical elevation of the moldingtable and the middle portion of the flask in position thereon.

My invention relates to certain improvements in pulley-molding apparatus whereby molds for double-armed pulleys may be accurately and rapidly formed, and a duplication of patterns may be avoided; and in general terms the invention consists in the construction and combination of parts substantially as hereinafter described and claimed.

The flask in which the mold for the double-- armed pulleys is formed consists of the three rings or cylinders, i. e.the cope 1, the middle portion 2, the drag 3-each part being provided with external lugs, said lugs having either holes or pins formed in or attached thereto, as is customary, for the purpose of adjusting the parts of the flask in proper relation to each other or in proper position upon the molding-table 1.

In making the mold the drug 3 is first placed upon the table 4, as shown in Fig. the half-patterns 5 of the spokes being first arranged in place upon the table, where they are held by pins projecting into properly-located holes in the table. The rim-pattern 6 now carefully raised up through an annular slot in the table 4 the desired distance, which is proportional to the distance which the rim in the completed pulley is to project beyond the spokes or arms. The drag 3 is then filled with suitable molding material, care being taken to properly compact the same. The

rim-pattern 6 is secured in any suitable mannor to the piston '7, located within the box 8, on which the outer portion of the table rests, and surrounding the pillar 9, supporting the central portion of the table. Vithin the pillar 9 is located the screw 10, loosely supported at its lower end in a vertical position and provided with a worm-wheel, 11.. On this screw is mounted the cross-head 12, having its ends extended through vertical slots in the pillar 9, and attached to the piston 7. The screw 10 is rotated, thereby causing the piston to move upor down, by the worm 13 (shown in dotted lines in Fig. 2) on the inclined shaft 14, said. shaft being provided outside of the box 8 with the handwvheel 15, whereby said shaft and its worm may be rotated. After the mold has been formed as above stated in the drag portion of the flask the rim-pattern (3 is with drawn into the box and the drag lifted from the table 4t, turned over, and deposited upon the casting-floor. This drag will contain the matrix for onehalf of one of the sets of arms and of a portion of the rim, as shown in Fig. 1. The middle portion, 2, of the flask is now placed and properly centered upon the table 4:, upon which the arm-patterns 5 have been adjusted, as before stated. The hubpattern 16 is then placed in position, and the liftingplates 17 are arranged between the arm-patterns 5 on the table 4. These plates are provided with lugs 18, having inwardly -bent flanges adapted for engagement with the heads of lifting and clamping bolts 19, which are slid into position after the plates are placed on the table. The spider 20 is next placed upon the port-ion 2 of the flask, and properly centered there by means of the pins 21 on two or more of its arms. On the under side of each of the arms of the spider are secured the half-arm patterns 22, said patterns being provided with guide pins 3 and clampingbolt 24, the guide-pins being constructed to fit within the longitudinal grooves 25 in the arms of the spider, and the bolts passing through said arms hold the pattern in place. The grooves 25 permit of the use of patterns of varying lengths in connection with the same spider. The parts of the apparatus being adjusted as above stated, the rim-patterno is raised up through the annular slot in the table until in contact with the spiderarms,

and any suitable molding material is properly tamped in the flask around the patterns. As will be observed, the rim-pattern divides the mold into two parts, a b, Fig. 1. The portion a of the mold will adhere to the flask 2, and can be lifted therewith; but in order to lift the portion 1) of the mold with the, flask, plates 26 (shown in, dot-ted lines in Fig. 3) are slipped over the bolts 19, said plates being of suflioient length to rest upon two adjacent arms of the spider 20. These plates are firmly clamped upon the arms by nuts 30 and washers 31 on the bolts 19. The portion I) of the mold being thus clamped by the plates 17 and bolts 19 to the spider, which rests upon the flask portion 2, the whole mold can be lifted from the table 4 and placed in position on the drag portion of the mold previously formed as above de scribed. The clamping-plates 26 are then removed, and the spider and its patterns are li t'ted from the flask, and the hub-pattern 16 removed. The mold as thus far formed is ready for the reception of the cope portions of the mold, which is formed by placing the cope 1 upon the table 4. and forming the mold in the same manner as the drag was formed, with the additional step of forming holes in the mold for the reception of the rods 19. The cope thus formed is then placed upon the middle portion ofthe mold. The rods 19 pass through the holes formed therein, and may be clamped upon said middle portion by clamplug-plates 27, fitting over the bolts 19, and extending over a considerable part of the mold, or to the edge of the flask. Nuts 28 are then screwed upon the bolts, thus firmly securing the cope to the middle portion.

If desired, the cope portion 1 may be formed immediately after the drag portion, and then set to one side until the middle portion has been formed as above stated. Then, while the middle portion is upon the molding-table,

the spider with its patterns and the hub-pattern are removed, and the cope portion 1 is placed and clamped upon the middle portion in the manner above stated. These two portions are then placed upon the drag portion, the core being first placed in position upon said drag portion.

I claim herein as my invention 1. In an apparatus for molding pulleys, a molding-table provided with an annular slot, in combination with a reciprocating rim-pattern, arm or spoke patterns supported on said table, a hub-pattern, and a spider also provided with arm-patterns, substantially as set forth.

2. In an apparatus for molding pulleys, a

molding-table provided with an annular slot,

in combination with a reciprocating rim-pat tern, arm or spoke patterns suitably arranged on said table, and lifting-plates arranged between the arnrpatterns, substantially as set forth.

3. In an apparatus for molding pulleys, a molding-table provided with an annular slot,

in combination with a reciprocating rim-pat- WILLIAM J. EARLY.

\Vitnesses:

W. B. CoRwIN, DAR\VIN S. XVoLooT'r. 

